The Casio F-105W-1A is a digital watch featuring a lightweight resin case, bezel, and band with resin glass. It is built with an electro-luminescent backlight in blue green for clear digital visibility.

This timepiece offers essential timekeeping functionality, including a 1/100-second stopwatch, daily alarm, hourly time signal, and an auto-calendar configured for 28 days in February.

Designed for everyday reliability, it features a water-resistant construction and an approximate battery life of 7 years on a CR2016 battery.

Key Features

Case size (L× W× H)	39 × 35.4 × 9.6 mm
Weight	21 g
Case and bezel material	Resin
Band	Resin Band
Water resistance	Water Resistant
Power supply and battery life	Approx. battery life: 7 years on CR2016
Glass	Resin Glass
Stopwatch	1/100-second stopwatch Measuring capacity: 59'59.99" Measuring modes: Elapsed time, split time, 1st-2nd place times
Alarm/hourly time signal	Daily alarm, Hourly time signal
Light	Electro-luminescent backlight
Light color	EL:Blue Green
Calendar	Auto-calendar (28 days for February)
Accuracy	Accuracy: ±30 seconds per month
Other features	12/24-hour format, Regular timekeeping: Digital: Hour, minute, second, pm, date, day

Highlights

Water resistant
Simple design

Downloads

Operation Guide

Frequently asked questions

What are the dimensions and weight of this watch?

The watch measures 39 × 35.4 × 9.6 mm and weighs 21 g.

What materials are used in the construction?

The case, bezel, and band are made of resin, and the watch face uses resin glass.

What type of backlight does the watch have?

It features an electro-luminescent backlight with a blue-green EL light.

What are the stopwatch specifications?

The 1/100-second stopwatch measures elapsed time, split time, and 1st-2nd place times up to 59'59.99".

How long does the battery last?

The watch has an approximate battery life of 7 years using a CR2016 battery.

Is the watch water resistant?

Yes, the watch features a water-resistant design.

Casio Retro Blue Dial Digital Watch F-105W-1ADF